Spraying nozzle



W. J. BROWN.

'SPRAYING NOZZLE.

APPLICATION FILED JULY 16.1921.

1,%30,533u Patented Oct. 3, 11.922.

2 SHEETS-SHEET I.

W. 1. BROWN.

SPRAYING NOZZLE.

APPLICATION FILED JULY 16.1921.

1A8Q533, Patented (m. 3,192.,

2 SHEETSSHEET 2.

. l VENTOR 5 XTTORNEY Patented (Dot. 3?, 1922.-

' UNHTE stares 31,43,533 arena FFHGE.

WILLIAM J. IBRPWNROF NEWARK, new JERSEY, assrenon 'ro nownmo w. BEACH, or

' NEWARK, NEW JERSEY.

SlPR-AYING NOZZLE.

Application filed July 16,

To all w ham it may concern:

Be it known that I, IVrLLrAM J. BROWN, a citizen of the United States, and a resident of Newark, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Spraying Nozzles, of which the following is a specification.

This invention relates to an improved spraying nozzle to be used for applying liquids, such as paints, and is of the type that is regulated immediately by the hand that grasps the nozzle, and" which is connected by tubes to a receptacle from which liquid is drawn, and to a source of air under pressure, these being mixed in the desired proportions .to bring about the desired results, such receptacle and connections not being shown in detail in this application as they are common in the art and need not be gone into in detail here.

The object of the invention is to provide an easily operable nozzle with a minimum of weight, one that is adapted to be easily and quickly regulated so as to permit the proper sequence of the operation of valves within its structure, to provide an easily assembled device with but little chance for leakage, and one in which the outlet portion is easily adapted for different requirements and which has no comparatively small projecting parts that are adapted to be bent,

. knocked off or broken in the rough handling v to which such nozzles are often subjected.

The invention is illustrated in the accom-j panying drawings, in which Figure 1 is a side view of the nozzle and Figure 2 is a central.'vertical section thereof. Figure 3 is a top view-of the rear part-of the nozzle with a portion thereof shown in section. Figure 4 is an enlarged vertical section taken on line 4 in Figure 2. Figure 5 is a detail section taken on line 5 in Figure 2. Figure 6 is "a. front view of a cap used on the front end of the nozzle. Figure 7 is a view of the front end of thebarrel part of the nozzle withthe cap shown in Figure 6 removed. Figure 8 is a front view'of a modified form of cap used onthe nozzle to meet certain require 1921. Serial No. 485,170.

thereof projects to the rear of the handle to givethe device a better balance, the barrel portion including a sleeve 12', on the front of which is secured an outer tube 13. In the front of the outer tube is arranged a plug 14, the inner end of which is arranged to form a valve seat for the valve 15 which is fastened to a stem 16 which projects through and beyond the back end of the barrel and has a recessed screw-threaded end 17.

A socket 18 is secured in the rear end of the sleeve 12 and encloses a spring 19 which abuts on a collar 20 fastened on the stem 16 and on the thimble 21, so that the spring has a normal tendency to hold the valve 15 shut, thus closing the channel provided by the bore 22 of the plug 14, the opening 23 within the tube 13 and the passage 24 of the inlet connection 25, which is preferably screwed in the bottom of the tube 13, as will be clearly seen from Figure 2. The barrel also includes a tip 26 which has an opening 27 which receives liquid, such as paint, from the bore 22, so that paint passing through a pipe connected to the inlet connection 25 can pass, when the valve 15 is open, to the outlet of the nozzle.

The air is supplied through an inlet connection 28, preferably fastened so that it projects from the bottomof the handle, the handle being provided with a bore 29 which is provided with a valve 30 normally held shut by a spring 31., the valve having on its top end a plunger 32 with a head 33 on the top thereof, the plunger 32 acting to close the end of the extension 34 of the bore 29,

and the ducts 35 and 36 conduct the air to a point where the handle meets the sleeve 12.

he sleeve 12 is provided with an opening 37 aligned with the duct 36 in the handle, and a channel 38 connects with a channel 39 which opens into the chamber 40 at the rear end of the tube 13,and a channel 41 extends, through the front part of the tube 13, from the chamber 40 to the front faceof the tube 13.

The cap 42 is arranged on the front end of the barrel and can be adjusted thereon, this being usually provided for by screwing the cap on the end of the barrel, and a lock nut 43 holds the cap in its adjusted position. The outer face of the tip 26 is of a generally in shape to the outer face of the tip and is conical form and has a cylindrical end 44. 'The cap 42 has its inner face 45 conforming usually adjusted so as to be spaced therefrom so as to provide a space through which the compressed air can pass, the cylindrical tip 44 being surrounded by a cylindrical recess l6 in the front of the tip, the tip having a central opening 47 in line with the bore 27 of the tip 26.

llt will thus be noted that the air undergoes a quick chan e of direction in mingling with the paint an emerging from the nozzle. The impact of the air against the blunt face 48, and then its projection radially toward the bore 47, and then its emerging from the bore 47, thoroughly mixes the liquid and the air and a better and finer mixture is the result.

To'control the admission of the air and of the liquid to the nozzle ll provide a trig ger 49 which swings on the handle, preferably by means of a wing 50 which is pivoted, as at 51, so'that the trigger swings downward and to the rear and is pivotally secured at its top end, as at 52, to'the front arm 53 which extends backward and is pivotally secured to the bottom end of a rocking lever 5a, which is arranged so that it swings within the chamber 55 in the handle, the front arm 53 being aligned with the head 33 of the plunger 32. The top end of the rocking lever 54 is connected with .a rear arm 56 which is provided with a collar 57 which slides on the stem 16, but which collarmoves the stem when-it is in contactwith the nut 58, which is usually backed up by a v lock nut 59, these parts being adapted to furnish means for regulating the time and the extent of opening of the valve 15, it'being understood that when the nut 58 is backed up, thatis, moved away slightly from the collar 57, the collar 57 moves a slight distance before it engages the stem to open the valve.

In the operation of this device the opera-- tor'holding the handle 11 pulls back on the trigger 49. The initial result of such movement is to swing the front arm 53 downward and forward, the downward movement acting to push the plunger 32 down to open the valve 30. This admits air through the channel above described, so that air emerges from the end of the nozzle. The continuedmovement of the-'trigger 49 pulls the rocking lever 54, which pushes back the rear arm 56, and when the collar 57 engages the nut 58, the valve 15 is opened and liquid enters the nozzle and passes out through the bores 22 and 27 and is mixed with the air emerging from the nozzle to provide a spray. When the nozzle is to be shut off the trigger is released, and as the trigger passes toward its normal position, which is brought about by the pressure of the springs" 19 and 31, the valve 15 is closed and then the valve 30 is closed, and if, at .the end of the closing movement of the trigger, it is slightly delayed air shut off there is no drip of material from the end of the nozzle. 7

The cap shown in F igures 8 and 9 is used when a fan-shaped spray is to be used, the nozzle being constructed so that there are no projecting parts adapted to be bent out of shape or to be knocked off, which very often happens with the. type of nozzle that utilizes two horn-shaped. projections for directing compressed air across the spray emerging from the central opening of the nozzle. This modified cap 60 has a bill 61 on the front which makes a rather flat and blunt face, the interior of the cap being similar to the cap 42, but having a by-pass 62 on each side extending from the inner face of the cap and'adapted to have their outer ends, as at 63, disposed so as to project a stream across the. spray emerging through the main or centralbore 64,'these ends 63 being arranged within recesses 65, so that their inset position, or their recessed disposition, prevents them from being hit to close them or to lace them out of alignment.

t will be evident that minor changes can be made in the construction of the parts on the last mentioned valve, which stem projects from the back thereof, a trigger, 4

the liquid passage of the barrel, a valve stem and a connection extending from the trigger through the handle to the valve stem, said connection also bearing on the air valve.

2. A spraving nozzle comprising a barrel with passages, for liquid and for air, a handle intermediate the ends of the barrel, the handle having an air passage in communication with the air passage of the barrel, an air valve in the handle, a valve in the liquid passage of the barrel, a valve stem on the last mentioned valve, which stem pro ects from the back thereof, a

trigger, a connection extending from the trigger through the handle to the valve stem, said connection also bearing on the air valve, and an adjusting means for regulating the movement of the connection on the valve stem to delay the opening of the liquid valve relative tothe air valve.

3. A spraying nozzle comprising a barrel with passages for air and for liquid, a

handle intermediate the ends of the barrel,

the handle having an air passage communieating with the air passage of the barrel, a valve in the liquid passage of the barrel and having a stem projecting from the rear end of the barrel,,a trigger hinged to the handle, a lever rocking in the) handle, a front arm hinged to the lever and the top of the trigger, a spring valve in the passage in the handle, said valve including a plunger operated by the movement of the front arm,;and a rear arm connecting the lever and the valve stem.

4. A spraying nozzle comprisinga barrel with passages for air and for liquid, a (handle intermediate the ends of the bagrel, the handle having an air passage communieating with the air passage of the barrel, a valve in the liquid passage of the barrel and having a stemprojecting from the rear end of the barrel, a trigger hinged to the handle, a lever rocking in the handle, a

I front arm hinged to the -"lever and the top of the trigger, a spring valve in the passage in the handle, said valve including a plunger operated by the movement of the front arm, a rear arm connected to the lever and having a sliding connection with the stem, and a regulating nut on the stemto limit the movement of the sliding connection relative to the stem.

5. A spraying nozzle comprising a handle and a barrel secured at the top of the handle, the handle and barrel having connected ducts to form an air passage, a valve in the air passage in the handle, said valve including a plunger, the barrel having a passage for liquid, a valve in said passage for liquid, said valve having a stem projecting from the back of the barrel, a lever arranged to rock in the handle, a trigger on the front of the handle, said trigger being pivoted at its rear to the handle, a front arm pivoted to the top of the'trigger and the bottom of the lever so that when the trigger is operated the arm moves forwardly and downwardly and thus rocks the lever and passes down on the plunger of the air valve to open said valve, and a. rear arm conncctedito the 7 &

.top of the lever and adjustably connectedwith the projecting part of the stem to open the valve in the passage for liquid.

6. In a spraying nozzle, a barrel having a generally conical outlet end with a cylindrical tip and having a bore in the center thereof, and a cap with an inner face conforming to the shape of the outlet end of v the barrel, said cap having a central opening, the cap being spaced from the outlet end so that air under pressure forced,

from the nozzle, said cap having opposed by-" passes with their outlets directed at an angle across the main outlet opening, said outlet openings being arranged in recessed portions on the face of the cap.

8. In a spraying nozzle, a cap with a main outletopening, said cap having a blunt face with inclined recesses in said face and with small passages from the inside to the recesses and emerging so as to project toward the' mainloutlet.

9. In a spraying nozzle, a cap having its front formed so as to provide atransverse bill with a main opening therein and ,hav-

ing recesses flanking said opening,said'cap having small passages from the inside of the cap to the recesses and disposed so as to project material across the axis of the main opening.

. In testimony that I claim the foregoing,

I have hereto set my hand, this 23rd day of March, 1921.

- W. J. BROWN. 

